Automobile jack



Oct. I, 1946. c. c. CRAIG AUTOMOBILE JACK 2 Sheets-Sheet l Filed Dec. 25, 1943 Oct. l,Y 1946. c. c. CRAIG AUTOMOBILE JACK 2 sheets-sheet 2 Filed Dec. 23, 1943 gmc/MO@ YY NWu H I l N. IIIIIIIIU-\ w* B,w\ QM w uw. \n\ j@ l. l lm km.

Patented Oct. 1, 1946 Y r1 v oFFioa AU-TGMOBILE .IACKZ Ghanese. craig, Morrill, Nebr. Application December 23, 19.43 Serial No. 515,442

f 1: *This invention relates to and is primarily adaptedf forusel in connection'l withv automobiles, although c-:apab-leofl employment in various rela- OHS;

It is paisti-cular]yi aimed' to provide a construction. whichis simple, durable, andv relatively inexpensive, andcapable of rapidr operation merely through. the manipulation of aflever.

.Another object is to' provide a construction wherein thepartsv arefcoll'apsible and capable of arrangement: in very compact relation so as to occupyfminimumspace4 when not in use;.

The more` specific` objects` and: advantages will become-'apparent froma considerationr of.' the description following takenzin:` connection with accompanying drawings. illustrating an operative embodiment.

Im said.v drawings.:`

Figline 1a. a', View in. thezimproved jack;I

Iigfllree 2A isa'. horizontal. viewftaken on the: line 2.5-2 oi;;-Fig1.lre.1.,,V

. Figure@ verticalzsection.takenon thexplane ofrlner-S'ofrFigurez f Figure: 4:; is: af partial plan yView showing; anv extension in place on the Ibase; n

Fgurez is a1.. verticalisection taken on the line 5 5 of Figure 4; and

Figure 6 is a fragmentary longitudinal sectional view through a modified form of operating lever.

Referring specically to the drawings wherein like reference characters designate like or similar parts, I provide a base I of any suitable length, dependent upon the particular automobile to be jacked and the operating space which accommodates such base. The base may be constructed of Wood or any other preferred material, and along the top preferably has a metallic wearplate I2 bolted or riveted thereto as at I3.

Elevating or lifting levers I4 and I5 are employed, preferably in pairs as shown, the same being pivotally connected together by a bolt I 6 passing therethrough/at suitable openings I1, a series of the latter preferably being employed to enable adjustment. Spacing the levers I4 apart and surrounding the bolt I6 is a sleeve I8 which side. elevation showing is adapted for direct engagement with the part to be elevated, usually one of the suspension springs of the automobile as suggested at -I9 in Figure 3.

l The levers I are pivotally connected by a bolt 2 0 passing through suitable openings thereof, and one of a series of openings 2| provided through theA base I0, to enable adjustment. Said levers I4 are connected by a bolt or rod as at 22 near their lower ends, and journaled thereon is a 4; Claimsl (Cl. l,2511-1527 )f sleeve or roller 23:` vadapted to travelv along' the wear-plate I2 Itis particularly to be noted that levers I4 at their lower end-s have guard extensions 24, below the roller 23,' and at all times located below the upperv surface of the wearplate I2'and,base Ill- Aloop 25 .extends rearwardly from the links or leversl I4, preferably beingpivotally connected thereto," and'I extending rearwardly from the loop 25 are a pair of draw elements Z6 and; 212 preferably in nature ofr metallic chains;

Anoperating leveris providedI at 28, of anyl suitable" construction, preferably detachable as shown. This lever may havea handle 29- as of Wood with a pair of sidey plates 30l bolted thereto as'at 31, and beingfspaced.' A'apart below such handle. In the space'between the sideplates. 38 one or more hooks 32. are.` movable, being pivoted at33. to the sidey plates by means of bolts, which are adjustable, since a seriesA of openings 34 are provided through the side plates for interchange thereof. Such side plates Si) have at their lower ends notches 35 whereby they may be engaged with and fulcrumed on a transverse. pin carried. by the base I0. and crossing a slot or bifurcationk 31 in one end. thereof. Thelatter slot.. or bifurcationV receives the lower end of the. side plates as shown in Figure 1 and enables operation thereof on theaXis of the pin 36.

In operating the device the chain 26 is anchored at one of its links onto a preferred hook 32, and thereupon lever 28 is pulleolV to the right in Figure l, thus drawing the lower ends of the levers I4 toward the operating lever, with roller 23 travelling on the wear-plate I2, and accordingly elevating the roller I8 and the spring I9 and the vehicle of which it forms a part. At the desired elevation for the roller I8 the other chain 21 is engaged with a hook 39 suitably fastened on the top of the base I0 at one side of the chain 2S. With the parts thus held elevated through y the engagement of the chain ZIwith the hook 39, chain 26 may be released from the engaged hook 32 and the lever 28 moved to the left in Figure 1 and reengaged with a link of the chain 26 and the lever is again pulled to the right further to elevate the roller I8, if necessary. This operation may be repeated'as many times as desired.

It will be understood that the lever 28 is detachable from the base by disengaging it at the notches 35 from the .pin 3B. In some instances a base longer than that shown will be advisable, in which event Van extension base is employed. This extension base has at 39' a hook equivalent to that at 39, `and at 36' and 31 has a pin and slot or bifurcation equivalent to those at 36 and 31, so that when the extension is in place the lever 28 may be engaged with the pin 36' and be actuated in cooperation with chains 26 and 21 as when engaged with the pin 26. In order separably to connect the extension 40 in line with the extension I as shown in Figure 4 metallic straps 4| and 42 are bolted or riveted as at 43 to the lower and upper surfaces of the extension, and they extend rearwardly beyond such extension, being riveted together as at 44. Strap 42 preferably has a depression or loop at 45 and a tongue at 46,

the tongue being insertable into the bifurcation 31 beneath the pin 36 and then into overlapping engagement with the upper surface of base I0 as shown in Figures 4 and 5, with the engaged in the depression 45. k

AS previously intimated, I may use an operating lever such as 28 with but a single hook like that employed at 32. Such a modiiied form of lever is shown in Figure 6. It has a handle, for instance oi wood, at 29 bolted at 3l' to a pair of side plates 30 having notches 35 in their lower edges for engagement with either pin 36 or 3B. The single hook is shown at 32' for accommodation in the space between the side plates 39' and to which it is pivoted by a bolt at 33.

Various changes may be resorted to provided that they fall within the spirit and scope of the invention.

I claim as my invention:

1. A jack of the class described comprising an elongated base, a lever pivoted to the base, a lever pivoted to the first-mentioned lever above the base, means carried by the second-mentioned lever to travel along the base, and means associated with the base operable to draw the secondmentioned lever toward the fulcrum of the firstmentioned lever to elevate them at their junction, and guard means on the second-mentioned lever extending therefrom below the upper surface of the base, said means on the second-mentioned lever movable on the base being a roller, a wear-plate on the base along which the roller moves, said means to actuate the levers consisting of a pair of draw elements extending from the second-mentioned lever, an operating lever on the pin 36 base having hook means engageable with one of the draw elements, and an anchoring hook on the base engageable by the other draw element.

2. A jack of the class described comprising an elongated base, a lever pivoted to the base, a lever pivoted to the first-mentioned lever above the base, means carried by the second-mentioned lever to travel along the base, and means associated with the base operable to draw the secondmentioned lever toward the ulcrum of the rstmentioned lever to elevate them at their junction, and guard means on the second-mentioned lever extending therefrom below the upper surface of the base, said means on the second-mentioned lever movable on the base being a roller, a wearplate on the base along which the roller moves, said means to actuate the levers consisting of a pair of draw elements extending from the second-mentioned lever, an operating lever on the base having hook means engageable with one of the draw elements, and an anchoring hook on the base engageable by the other draw element, said base having a slot, a pin crossing the slot, and said operating lever extending into the slot and having a notch engageable With said pin.

3. A structure of the class described having a base, jacking means thereon including an operating lever, said base having a slot and a pin crossing said slot, saidloperating lever having a notch whereby it may extend into the slot and ulcrum on said pin, and an extension lbase also having a similar notch and pin to accommodate said operating lever, said extension at one end having a strap provided with a depression to receive the adjacent lpin, said strap being of a length to engage the upper surface of the base.

4. A structure of the class describedhaving a base, jacking means thereon including an operating lever, said base having a transverse pin, said operating lever having a notch whereby it may fulcrum on said pin, and an extension base also having a transverse pin to accommodate said operating lever, and means at one end of said extension provided with a depression for coupling engagement with the first transverse pin.

CHARLES C. CRAIG. 

